Iindaba
Ngaba uMkhuseli Wokugquma Uya Kusebenza Ngaphandle Komhlaba?
Isithinteli sokushushuluza asikwazi ukusebenza kakuhle ngaphandle kokugqunywa komhlaba. Ukuze ukhuseleke ngokwenene kwi-voltage spikes, qiniseka ukuba i-outlet yakho igqunywe umhlaba kwaye iingcingo zakho zihambelana nekhowudi.
Kutheni Inkqubo Yakho Yokukhusela Umbane Ingaphelelanga Ngesiqingatha Ngaphandle Kokhuseleko Lwangaphakathi?
Isixhobo sobuchwephesha sokukhusela ukuvuza (i-SPD) sisebenza ngeendlela zokudlulisa amandla ezinamanqanaba amaninzi kunye neendlela zokubopha i-voltage. Embindini waso, sisebenzisa izinto ezifana nee-MOV kunye nee-GDT ukuhambisa amandla okuvuza ngokukhawuleza emhlabeni kunye nokubopha i-voltage eseleyo ngaphakathi kwemida ekhuselekileyo yezixhobo ezixhunyiweyo. Ukusebenza kwayo kuxhomekeke kumgangatho wezinto, ubude be-earth lead, kunye nokhuseleko oludibeneyo. Izalathisi zokusebenza eziphambili (ii-KPI) ezifana ne-clamping voltage (Up) kunye nemijikelo yobomi bokuvuza ziqinisekisa ukuthembeka kwexesha elide.
Isikhokelo sokuthenga isixhobo sokukhusela i-Surge: Iingcebiso ezi-3 ezikrelekrele zokukhetha isivumelwano sokwenyani
Fumanisa indlela yokukhetha isixhobo esikhuselekileyo sokukhusela ukuvuza (i-SPD) ngokuvavanya iinkqubo zokuvelisa, iziqinisekiso, kunye novavanyo lwelebhu — ezibalulekileyo kukhuseleko lwenkqubo yombane.
Izixhobo zokukhusela umbane wangaphakathi kunye nezixhobo zokuntywila: Yintoni umahluko?
Ukhuseleko lwangaphakathi lombane lugxile ekuthinteleni iintlantsi eziyingozi ezibangelwa yimisinga yombane, ikakhulu ngokusebenzisa ukubopha kunye nokufakelwa kwe-insulation. Ukhuseleko lokuhamba lujolise ekukhuseleni iinkqubo zangaphakathi kwimisinga ebangelwa ngumbane kusetyenziswa ii-SPD ezidibeneyo, ukhuselo, ukumiswa komhlaba, kunye neendlela zokwahlukanisa. Uthotho lwe-IEC 62305 lwahlula ngokucacileyo ezi ngcamango zimbini, kunye ne-SPM ejongene nemiphumo yokuhamba kunye ne-LPS yangaphakathi ejongene nemingcipheko yentlantsi. Zombini ziyinxalenye ebalulekileyo yesicwangciso esipheleleyo sokukhusela umbane.
Ukukhethwa kwezixhobo zokukhusela ukusasazeka kweenkqubo ze-PV - iParameter ye-SPDs
Eli nqaku lichaza indlela yokukhetha ii-SPD ezifanelekileyo kwicala le-DC leenkqubo zelanga eziphezu kophahla, ligxininisa imfuneko yezixhobo ezithile ze-PV ezine-voltage efanelekileyo kunye novavanyo lwangoku. Likwabonisa ukuba amaxabiso asemgangathweni awona mancinci, ngoko ke uyilo lwenkqubo, isiseko, kunye nokukhuselwa kombane kufuneka kuqwalaselwe ngononophelo.
Indlela Yokukhetha ngokuchanekileyo Isixhobo Esikhuselayo Sokugquma (i-SPD)
Ukukhethwa kwe-SPD kufuna uvavanyo olupheleleyo lwe-voltage yenkqubo, umngcipheko wombane, amandla okumelana nezixhobo, kunye nendawo yokufakela.
Ukukhetha Izixhobo zoKhuseleko lokuKhuphuka Ukukhethwa kweeNkqubo zePV - Ukufakwa kweeSPD
Ukuveliswa kwamandla e-Photovoltaic (PV) ngumthombo ophambili wamandla avuselelekayo kwaye kuya kukhuphisana ngakumbi xa kuthelekiswa nokuveliswa kwamandla kwendabuko ngokwezoqoqosho. Phakathi kweentlobo ezahlukeneyo zezicelo ze-PV, iinkqubo ezincinci ezisasazwayo—ezifana nokufakelwa kwe-PV eluphahleni—zezona zisetyenziswa kakhulu.
Iindlela Ezintlanu Zokukhusela Abakhuseli Bokungxama
Kuqikelelwa ukuba i-75% yokusilela kwemveliso ye-elektroniki kubangelwa zii-transients kunye ne-surges. Ii-voltage transients kunye ne-surges zifumaneka kuyo yonke indawo—nokuba zivela kwiigridi zamandla, ukubetha kombane, ukuqhuma, okanye kwanesenzo sokuhamba phezu kwekhaphethi, esinokuvelisa amashumi amawaka ee-volts ze-electrostatic induction. Zonke ezi zizisongelo ezingabonakaliyo kodwa ezibulalayo kwizixhobo ze-elektroniki.
Ngoko ke, ukuphucula ukuthembeka kweemveliso ze-elektroniki nokuqinisekisa ukhuseleko lwabantu, amanyathelo okukhusela kwi-voltage transients kunye ne-surges kufuneka aqaliswe.
Ukukhetha Izixhobo zoKhuseleko lokuKhuphuka Ukukhetha iinkqubo ze-PV - Iintlobo ze-SPD
Iinkqubo ze-PV eziphezu kophahla ziquka ukusasazwa kwamandla e-AC kunye ne-DC, apho ii-voltage zifikelela kwi-1500V. Ngokukodwa, icala le-DC—njengeephaneli ze-PV—linokuvezwa ngokuthe ngqo kwiindawo ezinokubanjiswa ngumbane, nto leyo ebangela ukuba zibe sesichengeni sokonakala ngumbane. Nokuba iimodyuli ze-PV aziphumeleli ukufakelwa umbane phantsi kombane ogqithisileyo, ukusebenza kwazo kombane kusenokwehla. Oku kubeka iimfuno eziphezulu kukhuseleko olugqithisileyo kwiinkqubo ze-PV eziphezu kophahla.
Iiparameter eziphambili kunye nemigangatho yovavanyo lweeSurge Protective Devices (SPDs)
Isixhobo Sokukhusela Ukunyuka (i-SPD): Isixhobo esisetyenziselwa ukunciphisa ii-overvoltages ezidlulayo kunye nokuguqula i-surge currents.